Sprocket gear for a chain-driven vehicle



FIG. 1 is a perspective view of a sprocket gear for a chain-driven vehicle;

FIG. 2 is a front elevation view of FIG. 1; and,

FIG. 3 is a left side elevational view of FIG. 1.

The top, bottom and right side views are substantially mirror images of the left side view shown in FIG. 3. The rear view is substantially a mirror image of the front view shown in FIG. 2. 

The ornamental design for a sprocket gear for a chain-driven vehicle, as shown and described. 